Question

from tafel plot calculatee exchang current density and coefficient transfer at 1atm and 100 mol/cm3

from tafel plot calculatee exchang current density and coefficient transfer at 1atm and 100 mol/cm3

Homework Answers

Answer #1

The tafel equstion is

where

  • is the overpotential, V (note that the graph uses η for this quantity)
  • is the so-called "Tafel slope", V
  • is the current density
  • is the so-called "exchange current density"

By the defination overpotential is zero, so

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The density of benzene changes from 0.879 g/cm3 to 0.891 g/cm3 when it freezes at 5.5°C....
The density of benzene changes from 0.879 g/cm3 to 0.891 g/cm3 when it freezes at 5.5°C. Its enthalpy of fusion is 10.59 kJ/mol. Determine the freezing point of benzene at 1000 atm.
Concentrated aqueous HCl has a molarity of 11.7 mol/L and a density of 1.20 g/cm3. What...
Concentrated aqueous HCl has a molarity of 11.7 mol/L and a density of 1.20 g/cm3. What is the molality of HCl in the solution?
The sulfuric acid (98 g/mol) in a car battery has a density of 1.225 g/cm3 and...
The sulfuric acid (98 g/mol) in a car battery has a density of 1.225 g/cm3 and is 3.75 M. What is the molality, mole fraction and percentage of sulfuric acid by mass in this solution?
Given a PV cell with light current density of 0.035A/cm2 and reverse saturation current density of...
Given a PV cell with light current density of 0.035A/cm2 and reverse saturation current density of 1.5x10-10 A/cm2. Calculate the voltage and current at the maximum power and also the fill factor under the ambient temperature of 32 oC. Use m=1 for an ideal diode. Plot current and power as a function of voltage from V=0 to V=Voc to verify that the approximation method for maximum current and voltage is a good agreement with the plotted values.
The density of a uniform crystal structure can be estimated from the crystal type and information...
The density of a uniform crystal structure can be estimated from the crystal type and information about the lattice parameter and atomic radii. Estimate the density of a material (gram/cm3) for a material with these properties: Atomic Radius = 0.1281 nm Crystal Type = FCC atomic Mass = 47 grams/mol (Note: Avogadro's Number , 6.022x10^23 atoms/mol)
Provide answers for each prompt. Scatter plot (copy and paste) Find correlation coefficient using Excel Find...
Provide answers for each prompt. Scatter plot (copy and paste) Find correlation coefficient using Excel Find means and standard deviations of Reading score and Math score. Interpret the result (regarding the correlation). Reading score Math score 45 102 40 100 48 106 45 101 38 98 43 100 36 92 41 102 42 102 50 110 43 104 50 108 42 96 40 99 41 96 48 102 47 104 37 94 42 98 45 100 Reading Score Mean= Math...
1. A spherical ball of naphthalene (mothball) is suspended in still air at 347 K. Its...
1. A spherical ball of naphthalene (mothball) is suspended in still air at 347 K. Its vapor pressure at this temperature is 666 Pa. Determine the concetration of naphthalene in the air that is in contact with the mothball. Assuming that the mass transfer coefficient for still air is given by D/a Where D is the diffusion coefficient and a is the radius of the sphere, determine the rate mass loss from the mothball of radius 2 cm. Take ....
In the absorption of component A (molecular weight = 60 g/mol) from an airstream into an...
In the absorption of component A (molecular weight = 60 g/mol) from an airstream into an aqueous solution, the bulk compositions of the two adjacent streams at a point in the apparatus were analyzed to be PA,G = 0.1 atm and CA,L = 1 kmol of A/m3 . The Henry’s Law constant was 0.85 ATM/mole fraction. The overall gas coefficient was KG = 0.27 kmol/m2/h/ATM. If 60% of the total resistance to mass transfer resides in the gas film, determine:...
You just received an offer in the mail to transfer your $5,000 balance from your current...
You just received an offer in the mail to transfer your $5,000 balance from your current credit card, which charges an annual rate of 18.7 percent, to a new credit card charging a rate of 7.9 percent. You plan to make payments of $250 a month on this debt. How many fewer payments will you have to make to pay off this debt if you transfer the balance to the new card? A 2.48 B 2.63 C 3.10 D 2.79...
Problem 2. (20 pts) You would like to know the heat transfer coefficient from a cooling...
Problem 2. (20 pts) You would like to know the heat transfer coefficient from a cooling fin operating under forced convection, but with a length of 1 cm the real fin is just too small to make any measurements. You make a 10x scale model and test it at the real operating temperatures and 1/10th the ambient airflow velocity. If your scale model has an h of 5.14 W/m2/K, what is the value of h for the real fin? In...